Gentlemen. I will finally be able to conquer this world with it's psychic powers.
Who needs women, when you have POWER.
This. I'd have her dig out the deepest, darkest secrets of a select few influential politicians, proceed to blackmail them, and start molding the world to my liking. And they can't send assassins to take care of me either, as Gardevoir could just read the minds of everyone nearby and instantly recognize those with any ill will towards me, and then take care of them.